Exynos: clock: Add generic api to get the clk freq
authorPadmavathi Venna <padma.v@samsung.com>
Thu, 28 Mar 2013 04:32:21 +0000 (04:32 +0000)
committerMinkyu Kang <mk7.kang@samsung.com>
Mon, 1 Apr 2013 05:02:08 +0000 (14:02 +0900)
commit12a46a384dac2eb0f879394ab39e89dec66df130
tree9a726e327cbc34816c8a1d12b6e976099a2a14f3
parent394d64e45b5a889a670ee83bfda3ff4358cdaaee
Exynos: clock: Add generic api to get the clk freq

Add generic api to get the frequency of the required peripherial. This
API gets the source clock frequency and returns the required frequency
by dividing with first and second dividers based on the requirement.

Test with command "sf probe 1:0; time sf read 40008000 0 1000".
Try with different numbers of bytes and see that sane values are obtained
Build and boot U-boot with this patch, backlight works properly.

Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
arch/arm/cpu/armv7/exynos/clock.c
arch/arm/include/asm/arch-exynos/clk.h